> One hundred years ago, Joe Knowles stripped down to his jockstrap, said goodbye to civilization, and marched off into the woods to prove his survival skills. He was the reality star of his day. For eight weeks, rapt readers followed his adventures in the Boston Post, for whom he was filing stories on birch bark. When he finally staggered out of the wild, looking like a holdover from the Stone Age, he returned home to a hero’s welcome. That’s when things got interesting.